:root {
  --base: #C5C9FF;
  --base-deep: #ABB0F5;
  --paper: #EDEEFF;
  --ink: #1B1A20;
  --ink-soft: #4B4F7C;
  --line: rgba(27, 26, 32, 0.22);
  --px: 4px;
  --gutter: clamp(16px, 5vw, 64px);
  color-scheme: light;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--base);
  color: var(--ink);
  font-family: "IBM Plex Sans JP", "Hiragino Sans", "Yu Gothic UI", sans-serif;
  font-size: 15px;
  line-height: 1.8;
}
.mono { font-family: "IBM Plex Mono", "Consolas", monospace; }
.hidden { display: none !important; }
a { color: inherit; }
::selection { background: var(--ink); color: var(--base); }
svg { display: block; fill: currentColor; shape-rendering: crispEdges; }
:focus-visible { outline: var(--px) solid var(--ink); outline-offset: var(--px); }

.page {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 var(--gutter);
}


.head { display: flex; padding: clamp(32px, 8vw, 80px) 0 clamp(16px, 4vw, 40px); }
.me { flex: none; }
.me { display: inline-block; margin-left: -48px; }
.me img {
  display: block;
  width: 256px; height: 256px;
  image-rendering: pixelated;
}
.me:hover img { animation: hop .5s steps(2) infinite alternate; }
@keyframes hop { to { transform: translateY(calc(var(--px) * -2)); } }


.shelf {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 24px;
  align-items: start;
  padding: 24px 0;
  border-top: var(--px) solid var(--ink);
}
.mark { width: 48px; height: 48px; }

.slots {
  list-style: none; margin: 0; padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(112px, 1fr));
  gap: 16px;
}
.slot {
  display: grid; place-items: center;
  aspect-ratio: 1;
  border: var(--px) solid var(--ink);
  background: var(--base);
  color: var(--ink);
  text-decoration: none;
  cursor: pointer;
  position: relative;
}
.slot svg, .slot img { width: 64px; height: 64px; image-rendering: pixelated; }
.slot:hover, .slot:focus-visible { background: var(--ink); color: var(--base); --icon-hi: var(--base); }
.slot:hover { transform: translate(calc(var(--px) * -1), calc(var(--px) * -1)); box-shadow: var(--px) var(--px) 0 var(--ink); }
.slot.empty {
  border-style: dashed;
  border-color: var(--line);
  cursor: default;
}
.slot.empty:hover { background: none; transform: none; box-shadow: none; }

.links { list-style: none; margin: 0; padding: 0; display: flex; gap: 16px; }
.links a { display: block; padding: 4px; }
.links svg { width: 40px; height: 40px; }
.links a:hover { background: var(--ink); color: var(--base); --icon-hi: var(--base); }


.foot { border-top: var(--px) solid var(--ink); padding: 24px 0 64px; }
.knock { display: flex; align-items: center; gap: 8px; max-width: 320px; }
.knock label { color: var(--ink-soft); }
.knock input {
  flex: 1; min-width: 0;
  font: inherit; font-size: 14px;
  color: var(--ink);
  background: transparent;
  border: 0; border-bottom: 1px solid transparent;
  padding: 2px 0;
}
.knock input:focus { outline: none; border-bottom-color: var(--line); }
.knock-out { min-height: 1.8em; margin: 6px 0 0; font-size: 14px; }
.knock-out.no { color: var(--ink-soft); }

/* アイコン（死神）のセリフ：顔の高さから出るドットの吹き出し */
.say {
  position: relative;
  align-self: flex-start;
  max-width: 440px;
  /* 画像の右側は余白なので、そのぶん死神に寄せる */
  margin: 76px 0 0 -40px;
  padding: calc(var(--px) * 2) calc(var(--px) * 4);
  background: var(--paper);
  border: var(--px) solid var(--ink);
  box-shadow: var(--px) var(--px) 0 var(--ink);
  font-size: 14px;
  line-height: 1.8;
  white-space: pre-wrap;
}
/* しっぽ：左上（顔）に向かう階段。枠の色の段に、紙色の段を重ねて枠を切る */
.say::before,
.say::after {
  content: "";
  position: absolute;
  clip-path: polygon(100% 100%, 100% 0, 0 0, 0 25%, 25% 25%, 25% 50%, 50% 50%, 50% 75%, 75% 75%, 75% 100%);
}
.say::before {
  top: calc(var(--px) * -1);
  left: calc(var(--px) * -5);
  width: calc(var(--px) * 4);
  height: calc(var(--px) * 4);
  background: var(--ink);
}
.say::after {
  top: 0;
  left: calc(var(--px) * -2);
  width: calc(var(--px) * 2);
  height: calc(var(--px) * 2);
  background: var(--paper);
}
.me.talking img { animation: hop .2s steps(2) infinite alternate; }

@media (max-width: 560px) {
  .say { margin: 56px 0 0 -30px; font-size: 13px; }
}


.sheet {
  width: min(720px, calc(100vw - 32px));
  max-height: calc(100dvh - 48px);
  padding: 0;
  border: var(--px) solid var(--ink);
  background: var(--paper);
  color: var(--ink);
  box-shadow: calc(var(--px) * 2) calc(var(--px) * 2) 0 var(--ink);
}
.sheet::backdrop { background: rgba(197, 201, 255, 0.85); }
.sheet-bar {
  position: sticky; top: 0;
  display: flex; justify-content: flex-end; gap: 8px;
  padding: 12px;
  background: var(--paper);
}
.sheet-bar a, .sheet-bar button {
  display: block; padding: 4px;
  border: 0; background: none; color: var(--ink); cursor: pointer;
}
.sheet-bar svg { width: 32px; height: 32px; }
.sheet-bar a:hover, .sheet-bar button:hover { background: var(--ink); color: var(--paper); }
.sheet-play { margin-right: auto; }

.prose { padding: 0 clamp(20px, 6vw, 56px) 56px; line-height: 2; }
.prose h1 { font-size: 28px; line-height: 1.4; margin: 0 0 8px; }
.prose .meta { margin: 0 0 32px; font-size: 12px; color: var(--ink-soft); font-family: "IBM Plex Mono", monospace; }
.prose h2 { font-size: 18px; margin: 40px 0 8px; }
.prose h3 { font-size: 15px; margin: 28px 0 4px; }
.prose p { margin: 0 0 1.2em; }
.prose ul { margin: 0 0 1.2em; padding-left: 1.4em; }
.prose a { text-underline-offset: 3px; }
.prose code { font-family: "IBM Plex Mono", monospace; font-size: .9em; background: var(--base); padding: 1px 4px; }

@media (max-width: 560px) {
  :root { --px: 3px; }
  .me { margin-left: -36px; }
  .me img { width: 192px; height: 192px; }
  .shelf { grid-template-columns: 1fr; gap: 16px; }
  .mark { width: 36px; height: 36px; }
  span.mark { display: none; }
  .slots { grid-template-columns: repeat(3, 1fr); gap: 12px; }
  .slot svg, .slot img { width: 48px; height: 48px; }
}
@media (prefers-reduced-motion: reduce) {
  .me:hover img { animation: none; }
}